Industrial and Product Design Ergonomics & Human Factors

Question 1

Which anthropometric measurement is most critical when designing the height of a work surface for a seated operator?

Accepted Answer

Sitting elbow height

Answer

Sitting elbow height determines the optimal work surface height to minimize shoulder fatigue and maintain a neutral wrist posture.

Question 2

The practice of designing products to accommodate the widest range of users without adaptation is called:

Accepted Answer

Universal design

Answer

Universal design is the principle of creating products usable by all people to the greatest extent possible without need for adaptation or specialized design.

Question 3

When applying the 5th-to-95th percentile design range, which user group is typically excluded?

Accepted Answer

Extreme outliers at both ends of the size spectrum

Answer

The 5th-to-95th percentile range intentionally excludes the smallest 5% and largest 5% of the population as extreme outliers.

Question 4

Cumulative trauma disorders (CTDs) in the workplace are most directly caused by:

Accepted Answer

Repetitive low-force motions over time

Answer

CTDs such as carpal tunnel syndrome develop from repeated micro-traumas caused by repetitive motions, often combined with awkward postures and sustained force.

Question 5

Which of the following best describes 'reach envelope' in ergonomic design?

Accepted Answer

The three-dimensional space a user can access without moving their feet

Answer

The reach envelope defines the spatial zone reachable by an operator's hands from a fixed position, used to place controls and tools within comfortable access.

Industrial and Product Design Practice Test

Industrial and Product Design Practice Test

Industrial and Product Design Ergonomics & Human Factors